CAT auxiliary output current identifies this official workshop document.
This single-page CAT diagnostic document covers the auxiliary output current high fault code 0054-06 for Caterpillar C11, C13, and C15 engines. It provides the diagnostic trouble code definition, probable causes, and recommended troubleshooting steps for technicians working on affected engine platforms.
Official CAT auxiliary output current high document details
| Brand | Caterpillar (CAT) |
| Model coverage | C11, C13, C15 (All Others) |
| System/Group | Diagnostic Trouble Codes (DTCs) |
| Publication no. | 0054-06 |
| Year/Revision | Unknown |
| Pages | 1 |
| File size | 0.3 MB |
| Format | |
| Language | English |
Document table of contents
- DTC 0054-06 — Auxiliary Output #06 Current High
- Conditions for setting the fault code
- Probable causes and system response
- Recommended diagnostic procedures
Applicable truck models
This DTC reference applies to Caterpillar C11, C13, and C15 diesel engines classified under the “All Others” grouping. These engine platforms are widely used in on-highway Class 8 trucks and vocational applications. The auxiliary output circuit referenced in code 0054-06 controls engine-related peripheral devices, and a current-high condition indicates excessive electrical draw or a short in that circuit. Technicians servicing any vehicle equipped with these CAT engine models should reference this document when the 0054-06 code is active or logged. For additional technical resources and parts information, visit the Caterpillar official support page.
Who needs this auxiliary output current high manual
Diesel mechanics, fleet maintenance technicians, and workshop owners diagnosing CAT C11, C13, or C15 engines will benefit from this document. It is essential when troubleshooting an auxiliary output current high condition flagged by the engine control module under DTC 0054-06.
The full PDF is available in the DiagTechPro manuals library, free account required to download.
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